Government Polytechnic, Gandhinagar
EC Department
Assignment 1: - Multimedia Communication (3361106)
1. Draw schematic of a switching system showing logical connections between
different elements of the system
2. Explain the operations of synchronous duplex mode of stored program control.
3. Draw a typical telephone traffic pattern of a working day of an urban exchange
and give your comments on peaks and valleys in it.
4. Compare two stage networks with single stage network.
5. A subscriber makes four phone calls during an hour. The time durations of these
calls are 12 minutes, 40 seconds, 3 minutes and 1 minute. Find subscriber traffic
in Erlang, Call Minutes (CM), Call Seconds (CS) and Centum Call Seconds
(CCS).
6. Draw different signaling tone waveforms used for telephony.
7. Explain level 3 processing in distributed SPC.
8. Define : 1) Erlang 2) Tandem Exchange 3) CCR 4) BHCA 5) Grade of Service
9. During 3 hours of busy period 3600 calls arrived at an exchange, average
holding time per call is 2 minutes. What is traffic load in (1) Erlang (2) CCS
10. Explain architecture of switching network.
11. Draw block diagram of EPABX.
12. Compare In channel signaling with common channel signaling
13. Explain the subscriber loop system using cable hierarchy.
Assignment 2
1. State Kepler’s three laws of satellite motion in Orbits
2. Compare LEO, MEO and GEO.
3. Draw the block diagram of satellite earth stations.
4. Explain the block diagram of earth station.
5. Explain direct broadcast satellites DTH receivers
6. Describe Geosynchronous orbit in satellite communication.
Assignment 3:
1. List out four ISDN services.
2. Describe transmission channels used in ISDN.
3. Describe interworking in ISDN.
4. Describe architecture of ISDN
5. Explain digital facsimile ser vies in ISDN
6. Describe protocol architecture of ISDN.
7. Describe E-mail service in ISDN.
8. Describe broadband ISDN (BISDN).
Assignment 4:
1. Explain main features of distributed multimedia system (DMS).
2. List and explain different multimedia applications.
3. List at least four audio and image file formats.
4. Describe the block diagram of distributed multimedia system (DMS).
5. Write full form of MPEG and JPEG.
6. Draw block diagram of MPEG-1 audio /video decoder.
7. Describe the digital audio signal processing with block diagram.
8. Explain the general protocol stack of H-series audio visual communication.
9. Explain VOD distributed multimedia application.
10. Describe the various digital media used for multimedia communication.
Assignment 5:
1. Draw VODSL architecture.
2. Describe video transmission across IP networks.
3. Explain the mobile video encoder across GSM.
4. Explain wireless multimedia network system.
5. Describe the data transmission using MPEG-2 and DVB (DTH internet delivery).
6. Draw satellite based digital TV broadcast system.
7. Explain registration and tunneling operation in mobile IP.
8.